Our polyethylene lining technology (DHF-COAT-PE) produces corrosion-resistant pipes lined with low-density polyethylene resin materials originally developed by DHF.

For over a half century since this technology was first commercialized in 1961, we have delivered many products to be installed in various industrial fields and have thus earned a high level of trust from our customers. DHF conducts three types of lining processes (“internal,” “external” and “internal & external”) in response to diverse customer needs.

Types of lining process


Internal polyethylene lining

This lining process is used to provide internal corrosion resistance in piping systems used for the fluid transport of seawater, corrosive chemicals, community water supply, sewage, and many other industrial purposes.


External polyethylene lining

This process has been utilized for over 40 years as a long-term corrosion resistance solution for transport systems operating under severe conditions, such as an extremely cold climate, a desert region, or under the sea.


Internal / external polyethylene lining

These products are designed with the functions of internal corrosion resistance and external corrosion /weather resistance. The installed pipes have been used in buried or above-ground piping systems for long periods of service.

Examples of lined products and applications

  • Polyethylene-lined steel pipe

  • Inner surface polyethylene lining for tank

  • On-site lining



For any inquiries about the services we provide, please contact us at the phone numbers listed below.

Tokyo Sales Office
Kansai Sales Office
Nagasaki Sales Office
Inquiries or consultation about the services offered